The current talisman comes from
Picatrix, an encyclopedic work
of medieval Arabic astrological magic.
The election for this week's talismans uses the
26th mansion of the Mansions of the Moon,
a 28 fold division of the monthly orbit of
the Moon.
Originally the lunar mansions were sidereal, that is
their boundaries were measured against the fixed stars. Later the boundaries of the
mansions were set at approximately 12 degrees and 51 minutes beginning with the
first degree of Aries.
Under this later system, "The twenty-sixth Mansion is
called Almisdam. It is begun in the 21st degree, 25th minute and 17th
second of Aquarius, and ends in the 4th degree, 17th minute and 10th second
of Pisces. In this Mansion may be made images for the goodwill of men."
Picatrix Excerpt IV, page xli (translation by Robert Thomas).
Here are the instructions for the image of the
Twenty Sixth Lunar Mansion from Picatrix,

"The twenty-sixth Mansion is Alfarg Primus, and it is for the creation of love.
When the Moon has passed into it, take white wax and mastic and melt them
together; from these fashion the image of a woman with
her hair unbound and before her a vessel placed as if
to receive her hair. Cense it will sweet-smelling
odors, and say: You, Tagriel, bring me to the love and
friendship of such and such a woman."

"Place the image in a small bag, and place with it also some of
the most sweet-smelling of substances; carry it with
you, and it shall be completed as you have requested.
And know that Tagriel is the name of the lord of
this Mansion. "